body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  background-color: #f5f5f5;
}

#app {
  margin: 0 auto;
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
  color: #333;
  text-align: center;
}

h2 {
  color: #555;
  border-bottom: 2px solid #eee;
  padding-bottom: 10px;
}

ul {
  list-style-type: none;
  padding: 0;
}

li {
  padding: 5px 0;
}

/* 主样式文件，仅包含特定样式 */
#vocabulary-section,
#course-section {
  margin-top: 30px;
  padding: 15px;
  border: 1px solid #eee;
  border-radius: 5px;
}
